touch_later

# File activerecord/lib/active_record/touch_later.rb, line 11
    def touch_later(*names) # :nodoc:
      _raise_record_not_touched_error unless persisted?

      @_defer_touch_attrs ||= timestamp_attributes_for_update_in_model
      @_defer_touch_attrs |= names.map! do |name|
        name = name.to_s
        self.class.attribute_aliases[name] || name
      end unless names.empty?

      @_touch_time = current_time_from_proper_timezone

      surreptitiously_touch @_defer_touch_attrs
      add_to_transaction
      @_new_record_before_last_commit ||= false

      # touch the parents as we are not calling the after_save callbacks
      self.class.reflect_on_all_associations.each do |r|
        if touch = r.options[:touch]
          if r.macro == :belongs_to
            ActiveRecord::Associations::Builder::BelongsTo.touch_record(self, changes_to_save, r.foreign_key, r.name, touch)
          elsif r.macro == :has_one
            ActiveRecord::Associations::Builder::HasOne.touch_record(self, r.name, touch)
          end
        end
      end
    end